thermal: Constify struct thermal_zone_device_ops

'struct thermal_zone_device_ops' are not modified in these drivers.

Constifying these structures moves some data to a read-only section, so
increases overall security, especially when the structure holds some
function pointers.

On a x86_64, with allmodconfig, as an example:
Before:
======
text data bss dec hex filename
28116 5168 128 33412 8284 drivers/thermal/armada_thermal.o

After:
=====
text data bss dec hex filename
28244 5040 128 33412 8284 drivers/thermal/armada_thermal.o

Signed-off-by: Christophe JAILLET <[e-mail]>
Reviewed-by: Frank Li <[e-mail]>
Reviewed-by: Miquel Raynal <[e-mail]> # For Armada
Reviewed-by: Niklas Söderlund <[e-mail]>
Link: https://lore.kernel.org/r/5bba3bf013[e-mail]
Signed-off-by: Daniel Lezcano <[e-mail]>

drivers/thermal/armada_thermal.c

···
 	return ret;
 }
 
-static struct thermal_zone_device_ops legacy_ops = {
+static const struct thermal_zone_device_ops legacy_ops = {
 	.get_temp = armada_get_temp_legacy,
 };
 

drivers/thermal/da9062-thermal.c

···
 	return 0;
 }
 
-static struct thermal_zone_device_ops da9062_thermal_ops = {
+static const struct thermal_zone_device_ops da9062_thermal_ops = {
 	.get_temp	= da9062_thermal_get_temp,
 };
 

drivers/thermal/dove_thermal.c

···
 	return 0;
 }
 
-static struct thermal_zone_device_ops ops = {
+static const struct thermal_zone_device_ops ops = {
 	.get_temp = dove_get_temp,
 };
 

drivers/thermal/imx_thermal.c

···
 	return trip->type == THERMAL_TRIP_PASSIVE;
 }
 
-static struct thermal_zone_device_ops imx_tz_ops = {
+static const struct thermal_zone_device_ops imx_tz_ops = {
 	.should_bind = imx_should_bind,
 	.get_temp = imx_get_temp,
 	.change_mode = imx_change_mode,

drivers/thermal/intel/int340x_thermal/int3400_thermal.c

···
 	return result;
 }
 
-static struct thermal_zone_device_ops int3400_thermal_ops = {
+static const struct thermal_zone_device_ops int3400_thermal_ops = {
 	.get_temp = int3400_thermal_get_temp,
 	.change_mode = int3400_thermal_change_mode,
 };

drivers/thermal/kirkwood_thermal.c

···
 	return 0;
 }
 
-static struct thermal_zone_device_ops ops = {
+static const struct thermal_zone_device_ops ops = {
 	.get_temp = kirkwood_get_temp,
 };
 

drivers/thermal/mediatek/lvts_thermal.c

···
 	return iret;
 }
 
-static struct thermal_zone_device_ops lvts_ops = {
+static const struct thermal_zone_device_ops lvts_ops = {
 	.get_temp = lvts_get_temp,
 	.set_trips = lvts_set_trips,
 };

drivers/thermal/renesas/rcar_thermal.c

···
 	return rcar_thermal_get_current_temp(priv, temp);
 }
 
-static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
+static const struct thermal_zone_device_ops rcar_thermal_zone_ops = {
 	.get_temp	= rcar_thermal_get_temp,
 };
 

drivers/thermal/spear_thermal.c

···
 	return 0;
 }
 
-static struct thermal_zone_device_ops ops = {
+static const struct thermal_zone_device_ops ops = {
 	.get_temp = thermal_get_temp,
 };
 

drivers/thermal/st/st_thermal.c

···
 	return 0;
 }
 
-static struct thermal_zone_device_ops st_tz_ops = {
+static const struct thermal_zone_device_ops st_tz_ops = {
 	.get_temp	= st_thermal_get_temp,
 };
 

drivers/thermal/testing/zone.c

···
 	return 0;
 }
 
-static struct thermal_zone_device_ops tt_zone_ops = {
+static const struct thermal_zone_device_ops tt_zone_ops = {
 	.get_temp = tt_zone_get_temp,
 };